苦马豆素（）因最初由Colegate从灰苦马豆中分离出来而得名，其分子式为C8H15NO3，相对分子量为173，熔点144-145 ℃，易溶于水，以及甲醇、乙醇、乙酸乙酯、正丁醇，不溶于乙醚、氯仿、丙酮等有机溶剂，纯品为白色针状晶体，酸解离常数pKa 为7.4。
经理化常数测定和波谱分析鉴定为苦马豆素。
It was identified to be swainsonine by physicochemical properties and spectral data analyses.
正丁醇萃取法是从发酵液中提取苦马豆素的有效方法。
The butanol extraction is an effective method of isolation of swainsonine from the solution of Metarhizium anisopliae.
由此证明，苦马豆素能损害胎盘并通过胎盘屏障直接作用胎儿。
It was suggested that swainsonine could damage placenta and endanger directly fetuses through placental barrier.
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